| 摘要 |
Provided is a liquid crystal panel driving method and device employing a dot inversion system. The liquid crystal panel driving method includes the steps of: (a) generating an alternating signal; (b) adding a signal of a different potential to the alternating signal, to then be applied to input ends of a gamma voltage generating unit (72) and a common voltage generating unit (73); (c) applying an alternating common voltage generated from the common voltage generating unit (73) to a common electrode (220); and (d) generating the data voltage whose polarity is inverted in the gamma voltage generating unit (72) on the basis of the alternating common voltage generated by the common voltage generating unit (73). In the dot inversion system, a common voltage is formed to alternate and a data voltage is inverted on the basis of the alternating common voltage, to thereby provide an effect of performing touch detection by using the alternating common voltage in a high-definitive liquid crystal display device (LCD).
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